Sign PDF

Draw, type or add a picture of your signature.

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Sign PDF help

Add a visible signature to a PDF by drawing it, typing it or choosing a signature image. Place it on the page, review the size and download the signed-looking copy.

How to use Sign PDF

Under Create your signature, choose Draw, Type or Upload.
Select Use signature, then Place on this page. Drag to position it; open Placement options for exact measurements.
Inspect each placement and select Save signed PDF.
Select Download signed PDF and check the visible signature in the saved copy.

Options explained

Signature method: Draw a signature, type one or upload a signature picture, according to the visible choices.
Text style and Signature text: Choose the appearance and wording of a typed signature.
Upload signature: Choose an existing signature image when drawing or typing is unsuitable.
Ink color: Set the color used for drawn or typed marks.
Remember on this device: Open More options to save your signature for later. Leave this off on shared computers.
Saved in this session: Choose an existing session signature for repeated placements.
Left (pt), Top (pt) and Width (pt): Open Placement options to position and resize the selected signature precisely; its proportions are kept.
Rotation: Angle a placed signature to fit the signing area.
Make form entries permanent: Keep supported filled values as page content when the document requires it.
Save an edited copy. Its existing digital signature will no longer be valid.: Shown for signed PDFs. Saving changes invalidates the original digital signature; keep the signed source separately.
Process all files: Choose multiple inputs for sign pdf. This runs the settings above separately for each file, shows individual results and failures, and offers Cancel file, Cancel all files and Download batch as ZIP. Check that page positions or form fields suit every input.

Limits and supported files

PDF documents. An opening password is required when the file needs one to be read.

Local tests used synthetic 10, 50, 100 and 200 MB PDFs containing large images. Chromium, Firefox and WebKit: completed 10, 50, 100, 200 MB.

Chromium, Firefox and WebKit: completed 50, 300, 1000 text pages.

Sign PDF was tested on a 16 GB Mac with Chromium, Firefox and WebKit. These are observed examples, not guaranteed limits on your device. WebKit tests do not replace a check in Safari on your own device.

Up to 100 input files and 512 MB total; up to 200 output files or 512 MB. ZIPs over 128 MB need Chrome/Edge direct disk saving; use individual downloads in other browsers. The Workflow stress test completed 100 synthetic files in all three engines; this does not guarantee the same capacity for every conversion.

Questions

Is this a certificate-based digital signature?

No. This tool adds a visible signature mark. It does not create a cryptographic certificate or verify the signer’s identity. Check the recipient’s requirements before using it for a document that needs certified signing.

Is my signature remembered automatically?

No. Open More options and choose Remember on this device only if you want to save it. Leave this off on shared computers.

Can I draw, type or upload a signature?

Draw a signature, type one or upload a signature picture, according to the visible choices.

Can I change the appearance of a typed signature?

Choose the appearance and wording of a typed signature.

Your files are processed on your device. Verify it yourself. Read our privacy policy for details about website analytics and saved settings.